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  2. Hidden Tear - Wikipedia

    en.wikipedia.org/wiki/Hidden_Tear

    Hidden Tear is the first open-source ransomware trojan that targets computers running Microsoft Windows [1] The original sample was posted in August 2015 to GitHub. [2]When Hidden Tear is activated, it encrypts certain types of files using a symmetric AES algorithm, then sends the symmetric key to the malware's control servers. [3]

  3. TorrentLocker - Wikipedia

    en.wikipedia.org/wiki/TorrentLocker

    TorrentLocker is a ransomware trojan targeting Microsoft Windows. [ 1 ] [ 2 ] It was first observed in February 2014, with at least five of its major releases made available by December 2014. [ 3 ] The malware encrypts the victim's files in a similar manner to CryptoLocker by implementing symmetric block cipher AES where the key is encrypted ...

  4. EICAR test file - Wikipedia

    en.wikipedia.org/wiki/EICAR_test_file

    The file is a text file of between 68 and 128 bytes [6] that is a legitimate .com executable file (plain x86 machine code) that can be run by MS-DOS, some work-alikes, and its successors OS/2 and Windows (except for 64-bit due to 16-bit limitations). The EICAR test file will print "EICAR-STANDARD-ANTIVIRUS-TEST-FILE!" when executed and then ...

  5. Ransomware - Wikipedia

    en.wikipedia.org/wiki/Ransomware

    Petya was first discovered in March 2016; unlike other forms of encrypting ransomware, the malware aimed to infect the master boot record, installing a payload which encrypts the file tables of the NTFS file system the next time that the infected system boots, blocking the system from booting into Windows at all until the ransom is paid.

  6. Jigsaw (ransomware) - Wikipedia

    en.wikipedia.org/wiki/Jigsaw_(ransomware)

    Jigsaw was designed in April 2016 and released a week after creation. [1] It was designed to be spread through malicious attachments in spam emails. [3] Jigsaw is activated if a user downloads the malware program which will encrypt all user files and master boot record. [4]

  7. Hive (ransomware) - Wikipedia

    en.wikipedia.org/wiki/Hive_(ransomware)

    Hive (also known as the Hive ransomware group) was a ransomware as a service (RaaS) operation carried out by the eponymous cybercrime organization between June 2021 and January 2023. The group's purpose was to attack mainly public institutions to subsequently demand ransom for release of hijacked data.